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Flat Torque Curve - drivability

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Old Mar 25, 2013 | 03:24 PM
  #16  
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allready done mate... Search for supercharger + turbocharger 4G63 engines in some hillclimb EVO's.... not electric, I know, but....

http://www.lancerregister.com/showth...ghlight=madmac
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Old Mar 25, 2013 | 04:47 PM
  #17  
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Originally Posted by sobo
Could always just swap an LS1 into it for that kind of torque curve.
If only I could fit an LS1 into an Evo!

A Corvette might be good, except that it's only 2wd and I want the awd traction. And they're not available where I live anyway.
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Old Mar 25, 2013 | 04:49 PM
  #18  
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Originally Posted by GMac
Now many people say I should just get a V8, but I want something that handles well, and a V8/V10/V12 that handles as well as an Evo does is just outside of my budget
Just occurred to me that with the amount of money that you are likely to need to spend on the mayhem that would cause this to work you may as well buy a used stock/mildly modded R35 GTR and be done with it.
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Old Mar 25, 2013 | 05:00 PM
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So please correct me if I am wrong but the idea is a Porsche 918 style drivetrain in an Evo?

If so, bada$$
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Old Mar 25, 2013 | 05:06 PM
  #20  
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Originally Posted by JohnBradley
So please correct me if I am wrong but the idea is a Porsche 918 style drivetrain in an Evo?

If so, bada$$
Agreed, this sound really cool simply from the engineering standpoint.
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Old Mar 25, 2013 | 05:24 PM
  #21  
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Originally Posted by MrLith
Just occurred to me that with the amount of money that you are likely to need to spend on the mayhem that would cause this to work you may as well buy a used stock/mildly modded R35 GTR and be done with it.
If in another country, just buy an R32/R33/R34 GTR. More reliable and way more fun than the R35 cheaper, and much cheaper.

Alternatively: 911 Turbo.
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Old Mar 25, 2013 | 08:38 PM
  #22  
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Originally Posted by JohnBradley
So please correct me if I am wrong but the idea is a Porsche 918 style drivetrain in an Evo?

If so, bada$$
Yeah kinda, bitt less power than that but a lot less cost - quite a bargan really! ;-)
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Old Mar 26, 2013 | 08:48 AM
  #23  
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Well if it was like a 918, KERS, or the new Ferrari set up (basically a street version of KERS), then it would be very interesting. I presume it would require some massive changes in the car which most wont want to do but it doesnt change how cool it is
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Old Mar 26, 2013 | 02:03 PM
  #24  
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It would perform the function of KERS, by storing energy in the battery from regerative breaking. This would also reduce fuel consumption, and also improve drivability in traffic - you could even use electric power alone in traffic (engine would just idle to run power steering, vacuum braking and air-con). System would be mostly stand-alone and separate to the existing car, except where the motor connects to the gearbox input shaft. The ICE would just "think" the car had gotten lighter, because it would always just accelerate much faster thanks to the extra electric torque ;-)
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Old Apr 1, 2013 | 04:32 AM
  #25  
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even the evo in stock form provides quick spool. i know it gives out a little top end but with some bolt ons and tuning, you can fix that.
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Old Apr 1, 2013 | 08:43 AM
  #26  
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Enjoy the broken tranny parts.
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Old Apr 1, 2013 | 07:18 PM
  #27  
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How about lightening up the car to 1500lbs and have the feeling of that instant power?
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Old Apr 2, 2013 | 09:32 AM
  #28  
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Originally Posted by GMac
Thanks for the feedback guys, I'll look into those other options...

I've considered the weight and I don't think it will be an issue because:
a) the electric motor is only 22kg, plus controller of 8kg
b) it's weight can be partially offset by removing the alternator, starter motor and starter battery (can use tiny 12V battery to turn on contactors for main battery pack, which uses electric motor to start engine; use much lighter DC-DC converter instead of alternator)
c) The battery pack would be small, high power cells, which would weigh about 70kg or so (with cooling, BMS, connectors, enclosure frame etc) and would go into the boot, so would actually improve the weight distribution.

I do admit the price is a huge barrier, so if there is a better way to get a similar result I'm all ears!
I understand where you are going with this but I would like to give you some insight without giving too much information which may get me fired

Electric motors EAT power like no body's business, where are you going to get this extra electrical power from? If you are downsizing batteries and getting rid of alternators, where is the regeneration coming from? You will drain the batteries extremely quickly and then no more juice.... its like driving around with 1/2 liter fuel tank but the added bonus is obsolete as you carry extra weight with limited benefits.....

basically what I'm telling you is you can not downsize the batteries, you will not be able to accomplish what you are doing without adding weight, period.
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Old Apr 5, 2013 | 01:00 AM
  #29  
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Originally Posted by GTijoejoe
I understand where you are going with this but I would like to give you some insight without giving too much information which may get me fired

Electric motors EAT power like no body's business, where are you going to get this extra electrical power from? If you are downsizing batteries and getting rid of alternators, where is the regeneration coming from? You will drain the batteries extremely quickly and then no more juice.... its like driving around with 1/2 liter fuel tank but the added bonus is obsolete as you carry extra weight with limited benefits.....

basically what I'm telling you is you can not downsize the batteries, you will not be able to accomplish what you are doing without adding weight, period.
Regen breaking charges the batteries - every time you brake, go down a hill, or it can even be set up to charge while the petrol motor works a bit more when cruising at constant speed on the highway; this is how hybrids work. (Of course the battery could also be plugged in to charge at the end of the day - or not.)
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Old Apr 5, 2013 | 10:35 AM
  #30  
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Originally Posted by GMac
Regen breaking charges the batteries - every time you brake, go down a hill, or it can even be set up to charge while the petrol motor works a bit more when cruising at constant speed on the highway; this is how hybrids work. (Of course the battery could also be plugged in to charge at the end of the day - or not.)
I am more then aware of how regen works
Regen is not magic, there are also a lot of other issues with regenration and its capabilities.
I think you are misunderstanding how much regen actually puts back into the batteries. Its like filling up your bath tub with a water gun. On a performance oriented electric motor, you will need a large battery tank so you can start filling that bath tub with your pee shooter sooner before you completely run out of battery power.
My overall point is you will not be able to make this type of system without adding weight, or everything you do will last for an extremely short time because you downsized your batteries....regardless of PHEV (plug-in hybrid electric vehicle)

I'm not an expert, but I have very good understanding of hybrid and performance electric setups for cars based on the current level of technology in the industry.
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